JPH0350279B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a musical score display device that displays a performance performed on, for example, a piano, an electronic organ, etc. as a musical score.

As a conventional musical score display device of this type, one is known that displays each note to be displayed at equal intervals regardless of the type of note. However, it is well known that in commercially available musical scores, the display intervals of each note correspond to the length of each note.

Therefore, the present invention provides a musical score display device that displays each note at display intervals depending on the length of the musical note, thereby displaying musical scores in a manner closer to commercially available musical scores.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a musical score display device according to the present invention, and the musical score display device shown in this figure displays the process of a performance performed on a piano 1 as a musical score. That is, piano 1
A key switch for detecting a key operation is provided corresponding to each key, and the output (musical tone information) of each key switch is supplied to the musical instrument interface 2, respectively.

The musical instrument interface 2 detects the on/off state of each key by scanning the output of each key switch of the piano 1 at a constant cycle (for example, 4 msec). Then, when a change occurs in the on/off state of each key (hereinafter referred to as an event), the second
The event block IB shown in Figure A is created and supplied to the note selection processing circuit 3. Here, the event block IB consists of a minimum of 4 bytes as shown in the figure, and timer data indicating the time from the previous event occurrence to the current event occurrence is written in the first and second bytes. The indicator shown in FIG. 2B is written in the third byte, and the key code (pitch data) of the key that has changed is written in the fourth byte. In this case, the event block created when the first key on piano 1 is pressed at the start of the performance.
The IB timer data becomes "0". In addition, information indicating whether the key is on or off is written in the 7th bit (MSB) of the indicator as "1" (key on) or "0" (key off), and the 1st bit and 0th bit are written in the indicator. Normally, "0" or "0" is written to the bit (LSB). Note that if the event interval exceeds the time represented by the number of bits in the timer data, a similar event block IB is created again at that point, but in this case, the 1st and 0th bits of the indicator are “0”,
It becomes “1”. Furthermore, the second to sixth bits of the indicator are not used at all in subsequent processing. In addition, if an event occurs for two or more keys at the same time, for example, if one key is turned off and another key is turned on at the same time, the block consisting of the indicator and key code shown in Figure 2 will be displayed.
IBBs are set as many times as there are keys for which an event has occurred.

Figure 3 is a musical score showing an _example of a piece of music.
Key C3 at time t2 when time T ₁ has elapsed from t ₁
When the key D4 is pressed at the same time as the key D4 is released, and at the time _t3 when the time _T2 has elapsed from this time t4, the key E4 is pressed at the same time as the key D4 is released, then at each time _t1 to _t3 Each created event block IB becomes event blocks IB-1 to IB-3 shown in FIG.

Next, the parameter setting device 4 is for setting the key name (C major, A minor, etc.), tempo (for example, quarter note time), and time signature (4/4 time, etc.). Key name data, tempo data, and time signature data corresponding to the key name, tempo, and meter are each supplied to the note selection processing circuit 3.

Note selection processing circuit 3 is instrument interface 2
Based on the event block IB supplied by
The on/off state of each key on the piano 1 is detected, and based on the detection result, a slot block SB shown in FIG. 5 is created and output to the symbol assembly processing circuit 5.

This note selection processing circuit 3 will be described in detail below. For example, when the score shown in FIG. 3 is played on the piano 1, the score display device shown in FIG.
The note selection processing circuit 3, which can display the musical score shown in FIG. 3 as it is, sends the data necessary for displaying this musical score to the slot shown in FIG.
Create a slot block SB for each of S ₁ and S ₂ . Figure 5 shows the basic configuration of this slot block SB, with a slot in the first byte.
S ₁ , S ₂ ... slot width (SL ₁ , S 2 shown in Figure 3)
SL ₂ ...) is converted to the note length code described later and written, and the TYPE is written in the second to fourth bytes.
Data, length data, and key code are written.
In this case, the block consisting of the second to fourth bytes
SBB represents a note or a rest, and if there are multiple notes (or rests) in slots S ₁ , S ₂ ... (in the case of multinote performance), each SBB corresponds to each note (or rest). It will be established as follows. Moreover, any data from "1" to "3" is written as the TYPE data. That is, if what is represented by block SBB is a note, "1" is written, and if it is a rest indicating a delay from the preceding note, "2" is written.
is written, and in the case of a silent rest (for example, the rest in slot _S5 in FIG. 3), "3" is written. In addition, the length data is
A note length code corresponding to the length of the note or rest is written. In this embodiment, the note length code LN1 is set corresponding to each length of a whole note (whole rest), a half note (half note), a quarter note (quarter rest), etc. , LN2, LN4... are assigned. Also, as a key code, the block
If SBB represents a note, the key code of that note is written, and if the block SBB represents a rest, the key code of the next note (if TYPE data is “2”) or “0” (TYPE If the data is "3") is written.

Next, the process of creating the slot block SB mentioned above will be explained in detail.

For example, when the event block IB- ₁ shown in FIG. 4 is created at time t1 shown in FIG. 3 and supplied to the note selection processing circuit 3, the note selection processing circuit 3 Based on this, it is detected that key C3 is pressed, and "1" is written as TYPE data in area _E2 shown in FIG. 6, and the key code of key C3 is written in area _E4 . Next, at time t ₂ , event block IB
-2, the note selection processing circuit 3 first converts the timer data _T1 into a note length code. In this example, the timer data _T1 corresponds to the time of a half note, and therefore the note length code LN2
is obtained. The note selection processing circuit 3 writes this note length code into area _E1 in FIG. 6 as the slot width. Next, the note selection processing circuit 3 determines that the key C3 is turned off and the key D is turned off based on the event block IB-2.
4 is turned on, and a note length code is sent to area E ₃ as length data indicating the length of note C3.
LN2, and TYPE data "1" in area E ₆ ,
Write the D4 key code in area E ₈ . At this point, slot block SB-1 is completed. The note selection processing circuit 3 is connected to this slot block SB-1.
is output to the symbol assembly processing circuit 5.

Next, at time _t3 , event block IB-3
is supplied, the note selection processing circuit 3 first converts the timer data T ₂ (corresponding to the length of a quarter note in this case) into a note length code LN4, and uses this note length code LN4 as the slot width. Write to E ₅ .
Next, it is detected that the key D4 is turned off and the key E4 is turned on based on the event block IB-3, and a note code LN4 corresponding to the on time _T2 of the key D4 is written in the area _E7 , and Area E ₁₀
Write the TYPE data “1” to the area and the key code of the key E4 to the area E ₁₂ . In this way, slot block SB-2 is completed at time _t3 . At this time, the creation of slot block SB-3 is started.
Note selection processing circuit 3 is a completed slot block.
SB-2 is output to the symbol assembly processing circuit 5.

The symbol assembly processing circuit 5 corresponds to each slot block SB supplied from the note selection processing circuit 3.
Display block HB for displaying notes and rests
(see FIG. 7) and outputs it to the note selection processing circuit 6. Here, this display block HB is the seventh
As shown in the figure, it consists of at least 4 bytes, and the first byte contains the supplied slot block SB.
The slot width is written, and the X coordinate, Y coordinate, and UDS code are written in the second to fourth bytes, respectively. Also, block HBB consisting of the 2nd to 4th bytes is the block of slot block SB.
Established in response to SBB. This display block
In HB, the X coordinate is the X of the note or rest in the slots S ₁ , S ₂ ... shown in Figure 3.
Data indicating the position in the direction (horizontal direction) is written. This position in the X direction is usually the slot S ₁ , S ₂
It suffices if the position is a certain distance from the left edge of...
If an accidental symbol (such as #) is added to a note, the note will be shifted to the right from its normal position. Further, as the Y coordinate, data indicating the position in the Y direction (vertical direction) within the slots S ₁ , S _{2 .} . . (for example, the distance from the bottom line of the staff) is written. In the case of a note, this position in the Y direction is determined by the key code in block SBB of slot block SB; in the case of a rest indicating a delay from the preceding note,
It is determined by the key code of the next note in block SBB, and in the case of a silent rest, it is at a predetermined fixed position.

Furthermore, the UDS code is a code that indicates the types of musical notes, rests, accidentals, etc. (these are collectively referred to as musical symbols). That is, all musical symbols are stored in advance in the form of vectors in the memory 7 shown in FIG. For example, a quarter note is stored by the vectors V ₁ , V _{2 .} . . shown in FIG. 8 and the coordinates of each starting point and end point, and a half note is stored by the vectors V ₁₁ , V ₁₂ . . . shown in the same figure. The coordinates of each starting point and ending point are stored. Further, for each note, as shown in FIG. 9, those where the bar is at the top of the note head and those where the bar is at the bottom are stored. And, corresponding to each of these musical symbols,
A UDS code has been established.

Therefore, if the block SBB of the supplied slot block SB represents a note, the symbol assembly processing circuit 5 determines the type of note based on its length data, and also determines the type of note based on its key code. The position of the bar is determined and the UDS code corresponding to this determination result is displayed on the display block HB shown in Figure 7.
write to. Also, if block SBB of slot block SB represents a rest, the block
The type of rest is determined based on the length data of SBB, and the UDS code corresponding to this determination result is written in display block HB.

Note that when an accidental symbol is added to a note, a block HBB for displaying the accidental symbol is added to the display block HB. In this case, data regarding the display position of the accidental is written in each of the X and Y coordinates of the added block HBB, and the UDS code of the accidental is written in the UDS code column.

As described above, display block HB is created every time slot block SB is supplied, and each block HBB of display block HB is created corresponding to each block SBB of slot block SB. A block HBB is added to display the accidental. and,
The created display block HB is supplied to the note display processing circuit 6.

The musical note display processing circuit 6 converts the X, Y coordinates in the block HBB of the display block HB supplied from the symbol assembly processing circuit 5 to the X, Y coordinates (hereinafter referred to as X', Y' coordinates) on the screen of the display device 8. ) and output to the display device 8 along with the UDS code. That is, for example, when displaying the musical score shown in Figure 3, first set the X' coordinate (X'-1) of the left end of slot _S1 , and then set this coordinate (X'-1) and slot _S1. Note C3 from the X coordinate in the corresponding display block HB
Calculate the X′ coordinate of Next, the X' coordinate of the right end of slot _S1 (left end of slot S2) is determined from the slot width and the coordinate (X'- ₁ ) in the display block HB (referred to as X'-2), and the determined coordinate is (X'-2) and the X' coordinate of the note D4 from the X coordinate in the display block HB corresponding to slot _S2 . Thereafter, the X' coordinates of each note, rest, etc. are determined in the same manner. Further, the Y' coordinate of each note, etc. is determined from the Y' coordinate of the staff and the Y coordinate within each display block. Then, the note display processing circuit 6 outputs the determined X' and Y' coordinates of each note etc. to the display device 8 together with the UDS code.

The display device 8 is composed of a CRT (cathode ray tube) display device (or printer) and a control circuit, and displays the musical staff on the CRT screen.
A musical symbol is read from the memory 7 based on the supplied UDS code, coordinates representing each vector of this musical symbol are converted based on the above-mentioned X' and Y' coordinates, and the musical symbol is displayed on a CRT screen, etc. do.

In this way, each note (rest) is sequentially displayed in the order in which the music progresses, at display intervals depending on the length of each note (rest).

Note that although the above-described embodiment is a hardware configuration, it goes without saying that this configuration can be replaced with a microcomputer. Further, in the above embodiment, the musical score is displayed based on the output of each key switch of the piano 1, but in the present invention, the musical score is displayed based on musical tone information recorded on, for example, a cassette tape, a floppy disk, etc. Of course, it is also possible to do so.

As explained above, according to the present invention, each note can be displayed at display intervals depending on the length of the note, and as a result, musical scores can be displayed in a form extremely similar to commercially available musical scores.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, and Fig. 2 A and B are event blocks.
Figure 3 is a diagram showing the configuration of the IB, Figure 3 is a musical score showing an example of a song, Figure 4 is a diagram showing a specific example of the event block IB, Figure 5 is a diagram showing the configuration of the slot block SB, Figure 6 is a diagram showing the slot block SB. FIG. 7 is a diagram showing the configuration of the display block HB, FIG. 8 is a diagram showing each vector constituting a musical symbol, and FIG. 9 is a diagram showing an example of a musical symbol. 2... Musical instrument interface, 3... Note selection processing circuit, 5... Symbol assembly processing circuit, 6... Note display processing circuit, 7... Memory, 8... Display device.

Claims (1)

[Scope of Claims] 1. Event data that outputs event data that indicates that a musical tone state has changed and is composed of data that indicates the musical tone state after the change and time data that indicates the time from the previous change point. output means; note length detection means for detecting the note length of a musical tone from time data in the event data; note selection means for determining the type of note based on the note length of the musical note; and a note display means for displaying the determined notes in the order of progression of the music, the note display means displaying each note sequentially at display intervals according to the length of the note. .